117467-72-8Relevant articles and documents
NOVEL OPTICALLY ACTIVE COMPOUNDS, METHOD FOR KINETIC OPTICAL RESOLUTION OF CARBOXYLIC ACID DERIVATIVES AND CATALYSTS THEREFOR
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Page 18; 21; 24, (2008/06/13)
The present invention provides a method of kinetic optical resolution of carboxylic acid derivatives using specific optically active catalysts. A racemic or diastereomeric mixture of carboxylic acid derivatives of the formula (A) is reacted with a nucleophile in the presence of an optically active catalyst to form an optically active nucleophile derivative of the formula (B). The catalyst is an optically active compound represented by the formula (C) or (D) [wherein R1 is a substituted or unsubstituted, saturated or unsaturated, straight-chain, branched or alicyclic aliphatic hydrocarbon group which can have a heteroatom, R2 is ethyl or vinyl, and R5 is hydrogen or methoxy respectively].
Synthesis of enantiomerically pure D- and L-(heteroaryl)alanines by asymmetric hydrogenation of (Z)-α-amino-α,β-didehydro esters
Masquelin,Broger,Muller,Schmid,Obrecht
, p. 1395 - 1411 (2007/10/02)
Homogeneous asymmetric hydrogenation of a wide range of methyl and tert-butyl (Z)-2-(acylamino)-3-(heteroaryl)acrylates (see 1a-f and 2a-d, f, g, resp.) catalyzed by diphosphinerhodium catalysts was studied for the synthesis of enantiomerically pure 3-fur